After a tragic accident involving a rabid dog, grief drives citzens to extreme, illogical measures to prevent further occurrences.

"What I'm saying is, with no dogs and no cats, the chance that another father would have to carry his animal-murdered child into their home, where the child's mother sat, doing the bills, happy or something like happy for the last time in her life, happy until the instant she looked up and saw--what I guess I'm saying is, with no dogs and no cats, the chances of that happening to someone else (or to us again) went down to that very beautiful number of Zero.
Which is why we eventually did have to enact our policy of sacrificing all dogs and cats who had been in the vicinity of the Village at the time of the incident."